Step-by-step explanation:
I=PRT/100
p=I/RT×100
p=2240/10×2×100
p=11200

First, replace

and

. Then you have

If we take

, then immediately we see a differential in the numerator in the form of

. So the integral becomes

and evaluates to

making (A) the correct answer.
6.32 is the square root of 40